90 



Codling Moth. 



In regard to spraying for codling moth, I have here a number 

 of photographs, prepared for use at the Maryland Horticultural 

 Society Meeting, which I shall be g"lad to have you examine. The 

 figures illustrate the work of our department during the past season, 

 along the same lines as the work done by Professor Surface in 

 Pennyslvania. 



The best means of disseminating information is to show the 

 people the results to be obtained. Our policy is to conduct the exper- 

 iments on the poor house farms of the counties. Being public prop- 

 erty nothing can be said against any money expended by the State 

 on these farms. The people of the county can go to these farms, 

 and see up-to-date methods applied. 



This (shows picture) illustrates the benefit of one spraying on 

 apple trees with Bordeaux Mixture and Paris Green. I was able 

 only to make one spraying, on account of the conditions ; and it indi- 

 cates what can be accomplished by simply one spraying. 



As you all know, the Codling Moth is an insect that does its 

 injury by eating into the apple and making, the fruit wormy. You 

 cannot sell wormy fruit; you want to gr4xv perfect fruit, and get 

 good money for it. We can easily control this pest. 



W. C. Tyson. Do you prefer Paris Green to Arsenate of 

 Lead? 



Prof. Symons. I have a very high opinion of Arsenate of 

 Lead; and in our experiments have secured slightly better results 



Fig:. 7. Apples from Unsprayed Trees. Larg-e Pile, Culls. Small 

 Pile on the Right, Saleable Fruit. (Photo by Peairs.) 



after using Arsenate of Lead then when Paris Green was used (See 

 Fig. 7 and 8) ; but with Bordeaux Mixture there is not the differ- 

 ence. In these experiments I have used Paris Green ; it is consider- 

 ably cheaper. 



W. C. Tyson. Does it stick as well? 



Prof. Symons. It does not ; but when applied with Bordeaux, 

 you have the Bordeaux to make it stick. 



W. C. Tyson. Is there any danger of burning? 



Prof. Symons. No, sir ; not with the Bordeaux Mixture. 



Member. What per cent of Paris Green do you use with the 

 Bordeaux Mixture? 



